Yealink technical note
OpenVPN Feature on Yealink IP Phones V1.0
A Yealink technical note for the Yealink SIP-T54W and T54W+DD10K (31 pages).
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About this technical note
About the OpenVPN Feature on Yealink IP Phones V1.0
A Yealink technical note for the Yealink SIP-T54W and T54W+DD10K (31 pages). This is version 1.0, last updated by Yealink on April 3, 2026, and you can read it right here or download it.
What’s inside
- About VPN
- Types of VPN Access
- VPN Technology
- Example Use of a VPN Tunnel
- Yealink IP Phones Compatible with VPN
- Installing the OpenVPN Server
- Linux Platform
- Installing and Configuring the OpenVPN Server
- Creating the OpenVPN TAR File for the VPN Client
- Windows Platform
- Configuring OpenVPN Feature on IP Phones
- Configuring the OpenVPN Feature using Configuration Files
- Configuring the OpenVPN feature via the Web User Interface
- Enabling the OpenVPN Feature via the Phone User Interface
- Troubleshooting
- Why does the phone fail to connect to the OpenVPN server?
- How to change the signature algorithm of the certificate?
- Why does the phone fail to register to the SIP server after successfully connecting to the OpenVPN server?
- Why does the phone fail to register when the domain name of the SIP server is configured on the IP phone?
- Why there is no sound during a call?
- Why the voice quality is poor?
- Glossary
- Example Configuration Files
- Server Configuration File
- Client Configuration File
Phones covered
Yealink phones this technical note covers
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FAQ
Questions about this document
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